Answer:
Case A
Explanation:
given,
size of bacteria = 1 mm x 1 mm
velocity = 20 mm/s
size of the swimmer = 1.5 m x 1.5 m
velocity of swimmer = 3 m/s
Viscous force
![F = \eta A \dfrac{dv}{dx}](https://tex.z-dn.net/?f=F%20%3D%20%5Ceta%20A%20%5Cdfrac%7Bdv%7D%7Bdx%7D)
for the bacteria
![F = \eta \times 10^{-6}\times 20\times 10^{-3}](https://tex.z-dn.net/?f=F%20%3D%20%5Ceta%20%5Ctimes%2010%5E%7B-6%7D%5Ctimes%2020%5Ctimes%2010%5E%7B-3%7D)
![F =2\times 10^{-8} \eta\ N](https://tex.z-dn.net/?f=F%20%3D2%5Ctimes%2010%5E%7B-8%7D%20%5Ceta%5C%20N)
for the swimmer
![F = \eta \times 1.5^2\times 3](https://tex.z-dn.net/?f=F%20%3D%20%5Ceta%20%5Ctimes%201.5%5E2%5Ctimes%203)
![F =6.75 \eta\ N](https://tex.z-dn.net/?f=F%20%3D6.75%20%5Ceta%5C%20N)
from the above force calculation
In case B inertial force that represent mass is more than the inertial force in case of bacteria.
Viscous force is dominant in case of bacteria.
So, In Case A viscous force will be dominant.
1). the product of the two masses being gravitationally attracted to each other
2). the distance between their centers of mass
And that's IT. The gravitational force between them depends on
only those two things, nothing else.
Earth sits motionless in the universe at the center of a revolving globe of starts , with the moon and planets in orbit around the earth, is the surrounding model of the uninverse
In this case, volume of the can remains constant. The relationship between pressure and temperature at constant volume is given by:
P/T = Constant
Then
![\frac{ P_{1} }{ T_{1} } = \frac{ P_{2} }{ T_{2} }](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20P_%7B1%7D%20%7D%7B%20T_%7B1%7D%20%7D%20%3D%20%5Cfrac%7B%20P_%7B2%7D%20%7D%7B%20T_%7B2%7D%20%7D%20)
Where
P1 = 40 psi
P2 = ?
T1 = 60°F ≈ 289 K
T2 = 90°F ≈ 305 K (note, 363 K is not right)
Substituting;